CVE-2026-21857 (GCVE-0-2026-21857)
Vulnerability from cvelistv5
Published
2026-01-07 22:32
Modified
2026-01-08 18:17
CWE
  • CWE-24 - Path Traversal: '../filedir'
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Summary
REDAXO is a PHP-based content management system. Prior to version 5.20.2, authenticated users with backup permissions can read arbitrary files within the webroot via path traversal in the Backup addon's file export functionality. The Backup addon does not validate the `EXPDIR` POST parameter against the UI-generated allowlist of permitted directories. An attacker can supply relative paths containing `../` sequences (or even absolute paths inside the document root) to include any readable file in the generated `.tar.gz` archive. Version 5.20.2 fixes this issue.
Impacted products
Vendor Product Version
redaxo redaxo Version: < 5.20.2
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Show details on NVD website


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